_Nations_, answer to cities, 177, 178; 183;
definition of, 192, 193.
_Nikaia_, Sultans of, 135, 144, 145;
Emperors of, 140;
their recovery of Constantinople, 142;
its position under Trajan, 234, 235.
_Nikêphoros_, Emperor, acknowledges the claim of Charles the Great, 108.
_Nikomêdeia_, its position under Trajan, 234, 235.
_Normandy_, settlement of, 190.